21346383 has 16 divisors (see below), whose sum is σ = 29721600. Its totient is φ = 13611840.

The previous prime is 21346357. The next prime is 21346387. The reversal of 21346383 is 38364312.

It is not a de Polignac number, because 21346383 - 2¹² = 21342287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21346383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6988 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (1857600).

Almost surely, 2^21346383 is an apocalyptic number.

21346383 is a deficient number, since it is larger than the sum of its proper divisors (8375217).

21346383 is a wasteful number, since it uses less digits than its factorization.

21346383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702.

The product of its digits is 10368, while the sum is 30.

The square root of 21346383 is about 4620.2146054053. The cubic root of 21346383 is about 277.4010490478.

The spelling of 21346383 in words is "twenty-one million, three hundred forty-six thousand, three hundred eighty-three".